Borla 40477 - Specialty Muffler Un-Notched Neck
SKU: 93600655898

Borla 40477 - Specialty Muffler Un-Notched Neck

Sale price$184.05 Regular price$204.50
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Description

Borla 40477 - Specialty Muffler Un-Notched NeckTransverse Flow design. Transverse flow mufflers were originally designed for GM F Body Camaros and Firebirds. On these vehicles they were mounted behind the rear axle and were parallel to the axle. This muffler can also be used to create custom systems on other vehicles. Single 2. 5" Offset Inlet Dual 2. 5" Offset Outlets. The inlet and one outlet are on one end of the muffler, and the second outlet is on the opposite end. Reversible design for

Transverse Flow design. Transverse flow mufflers were originally designed for GM F-Body Camaros and Firebirds. On these vehicles they were mounted behind the rear axle and were parallel to the axle. This muffler can also be used to create custom systems on other vehicles. Single 2.5" Offset Inlet/ Dual 2.5" Offset Outlets. The inlet and one outlet are on one end of the muffler, and the second outlet is on the opposite end. Reversible design for installation flexibility. High-quality T-304 austenitic stainless steel will never rust. 100% welded construction for strength. Free Flow design for improved performance. High-temperature continuous-filament fiber (CFF) acoustic material for sound control. Natural mill finish can be brushed or polished prior to installation. Best of all, it's made in the USA and backed by BORLA(r)'S Million-Mile warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.

Exhaust Muffler; T-304 Stainless steel; 10-1/4 Inch Width x 5-1/2 Inch Height Case; Single 2-1/2 Inch Offset Inlet; Dual 2-1/2 Inch Outlet; 19 Inch Body/24 Overall Length

Features & Benefits

  • BORLA® Specialty Mufflers Are Designed For Supreme Street Performance
  • Offering Aircraft Quality High Quality T-304 Stainless Steel, All Welded Construction And More For Increased Horsepower And Torque
  • Independent Tests Prove Maximum Flow Capability
  • All BORLA® Mufflers Are Manufactured Using Ultra Durable, Continuous Strand Sound Absorbing Composite Filament
  • Unique, Proprietary Frequency Cancelling Technology Makes Sound Waves Travel Between Multiple Core Walls While Also Increasing Exhaust Gas Velocity
  • Flared Collectors On Both Ends Increase The Internal Diameter Of The Muffler Allowing For Optimal Flow
  • Limited Million Mile Warranty

Attributes

  • Shape: Oval
  • Inlet Position: Offset Single
  • Inlet Diameter (IN): 2-1/2 Inch
  • Outlet Position: Offset Dual
  • Outlet Diameter (IN): 2-1/2 Inch
  • Case Diameter (IN): 10-1/4 Inch X 5-1/2 Inch
  • Case Length (IN): 19 Inch
  • Overall Length (IN): 24 Inch
  • Includes Tip: No
  • Universality: Fully Universal
  • Tip Finish: No Tip
  • Estimated Install Time (Hours): 1
  • Color/ Finish: Bare
  • Material: Stainless Steel
  • Wall Type: Single Wall
  • Internal Construction: Straight Through Single Core
  • Tip Length (IN): No Tip
  • Tip Diameter (IN): No Tip
  • Tip Material: No Tip


Specifications:

Description_ASM Specialty Muffler - Transverse Flow - 2.5" Offset Inlet/ Dual 2.5" Offset Outlets 6" x 10.25" Oval x 19" Long Body 24" Overall Length. Universal Part. Reversible Design.
Description_DEF Exhaust Muffler
Description_DES Specialty Muffler - Un-Notched Neck
Description_EXT Specialty Transverse Flow Muffler - 2.5" Offset Inlet/ Dual 2.5" Offset Outlets 6" x 10.25" Oval x 19" Long Body 24" Overall Length. Universal Part. Reversible Design.
Description_FAB Transverse flow design, originally designed for F-Body Camaro and Firebirds
Description_FAB Universal muffler. Reversible design.
Description_FAB Alternate muffler with Notched necks is 400498, use band clamp 18325
Description_FAB Un-Notched necks are designed for weld in installation. If clamping, use band clamps 18004.
Description_INV BORLA(r) Transverse Muffler
Description_MKT Transverse Flow design. Transverse flow mufflers were originally designed for GM F-Body Camaros and Firebirds. On these vehicles they were mounted behind the rear axle and were parallel to the axle. This muffler can also be used to create custom systems on other vehicles. Single 2.5" Offset Inlet/ Dual 2.5" Offset Outlets. The inlet and one outlet are on one end of the muffler, and the second outlet is on the opposite end. Reversible design for installation flexibility. High-quality T-304 austenitic stainless steel will never rust. 100% welded construction for strength. Free Flow design for improved performance. High-temperature continuous-filament fiber (CFF) acoustic material for sound control. Natural mill finish can be brushed or polished prior to installation. Best of all, it's made in the USA and backed by BORLA(r)'S Million-Mile warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.
Description_SHO Transverse Muffler


Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 93600655898

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tara coleman
Chelsea, US
★★★★★ 5
Picky dog approved!
Flavor Name: Boy, Size: 8 Count (Pack of 1), Flavor Name: Boy, Size: 8 Count (Pack of 1)
My elder beagle generally doesn’t like cookie or biscuit type of treats. He prefers soft bacon types. I ordered these for his doggy 12 year birthday so his attending “friends” could all share the treats. I wasn’t expecting him to eat it, but wanted the set for the occasion. He took a sniff and immediately took the treat and ate it. He loved it as did the other dogs (one of those also a “picky treat eater” All of the dogs loved them. I will definitely be ordering again for special occasions.
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Reviewed in the United States on February 14, 2026
D
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DianaM
Massapequa, US
★★★★★ 4
Pretty but crumbled to bits.
Flavor Name: Boy, Size: 8 Count (Pack of 1)
These birthday doggy bones were pretty to look at and they smelled good. However, each bone was tightly shrink wrapped and very difficult to open. Not one came out whole and most just crumbled so thoroughly there wasn’t a piece big enough to hand to my dog. So, not a win.
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Reviewed in the United States on April 5, 2026
C
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cheryl
Charlottesville, US
★★★★★ 5
dogs loved them
Flavor Name: Boy, Size: 8 Count (Pack of 1)
great for dogs birthday - great to share with other dogs
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Reviewed in the United States on March 7, 2026
A
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Amazon buyer
Lowell, US
★★★★★ 5
My dog loved these!
Flavor Name: Boy, Size: 8 Count (Pack of 1), Flavor Name: Boy, Size: 8 Count (Pack of 1)
My dog loved these birthday treats! They were so cute.
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Reviewed in the United States on January 19, 2026
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Scott Richardson
Birmingham, US
★★★★★ 5
Great Product
Flavor Name: Boy, Size: 8 Count (Pack of 1)
My dogs loved these after one of their birthdays. The treats were packaged very nicely and would buy again,
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Reviewed in the United States on March 11, 2026

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